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Florida prisons were placed on lockdown Thursday following reports of security threats. >> Read more trending news The Florida Department of Corrections announced that it canceled weekend visitation at all institutions for Saturday and Sunday because of a possible security threat. Correction officials said they received information that indicated small groups of inmates at several institutions would try to disrupt prison operations. The lockdown affects more than 97,000 inmates in Florida’s 151 correctional facilities, including major institutions, work camps and annex facilities. The move affects recreational and educational programs, but inmates are not confined to their cells, officials said. The cancellation does not apply to work release centers, department officials said.

A group of storms east of the Caribbean has developed into Tropical Storm Harvey. Harvey is approaching the Lesser Antilles and it is forecast to continue traveling west, officially arriving in the Caribbean Friday afternoon. It has been given a 100 percent chance of becoming a tropical cyclone over the next two days. It’s also expected to become a hurricane by Monday morning. At this point it is no threat to Florida. “We have entered the peak of Hurricane season, which is mid-August through late October,” said Dennis Feltgen, spokesman for the National Hurricane Center.

A Cleveland father is upset after he says his son was left on the school bus for hours on his first day of classes. WJW reported that Trevelle Hargrove’s 6-year-old son, Trevelle Jr., has special needs. Hargrove said his son fell asleep on the bus. >> Read more trending news Trevelle Jr. said he was found after he honked the horn of the bus and jumped up and down. A spokesperson for the Cleveland Metropolitan School District said Trevelle Jr. fell asleep on the bus Monday and was there for less than an hour. His father says otherwise. “After an hour and they couldn't tell me what was going on I started to get extremely worried,” Hargrove told WJW. 'I couldn't understand why no one could tell me where my son was.” Hargrove said his son was back four hours later, at 6:30 p.m. “You can’t just forget to do things,” he said. “This isn’t like a normal job where you forget to put the straw in the bag or you forget to clock in or whatever it is you do at a normal job. You can’t do that when it comes to kids.” Hargrove said his son won’t be riding the bus again any time soon. The district is is investigating. Cleveland Metropolitan Schools Chief Communications Officer Roseann Canfora issued the following statement to WJW: “Drivers are trained to follow strict protocols for inspecting every seat at the beginning and end of their routes, and CMSD has a zero tolerance for any violation of these safety guidelines.” The bus driver has resigned. WJW reported they may be terminated pending the outcome of the district’s investigation.

Authorities said a terror attack in Barcelona claimed at least 13 lives on Thursday and left 80 others injured after a van slammed into pedestrians on Barcelona's popular La Rambla street. >> Read more trending news Mossos d'Esquadra, the Catalonia police force, confirmed the attack in a Twitter post around 5:10 p.m. local time.

Many scientists and groups across the U.S. aren’t taking Monday’s eclipse for granted - they want to learn things! There will be lots of experiments happening during the 90-minute event. Here are just a few: 1. The eclipse movie - Volunteers from national labs and education groups will track the sun along its path using identical telescopes, which will take continuous digital pictures. The pictures will be later spliced together to make a 90-minute movie. So don’t fret if you can’t watch on Monday! 2. Sounds - college students at Tennessee’s Austin Peay State University, along with NASA< will measure the sound of the eclipse by setting up low-frequency radio experiments in bean fields. They’ll capture the noise the eclipse creates and figure out how its different from normal conditions. 3. Animal behavior - Also at Austin Peay State University, scientists will be watching how crickets and cows act when the Moon covers the sun and darkens the sky. During a solar eclipse in 1991, spiders were seen taking down their webs. 4. Solar flares - We know solar flares happen when the sun’s magnetic field causes a brief burst of intense radiation, but we don’t know enough to protect our technology from them. During the eclipse, a group of scientists in Wyoming will attempt to take some measurements of the sun’s outer atmosphere. Usually the sun is too bright to do this, but the eclipse should provide a good view. Want to watch the eclipse? CLICK HERE to see where you can get free glasses.